BG Pathum will begin their defence of the Thai League 1 title away at Chonburi next month following yesterday's draw.
The 2021/22 season is scheduled to kick off on Sept 3 as the opening date was postponed twice from July 31 and Aug 13 due to the Covid-19 pandemic.
But the league said it could be postponed for the third time because of a new surge in Covid-19 cases and the government's strict coronavirus protocols in certain provinces.
Other matches in the opening weekend from Sept 3-5 include Buriram United v Suphanburi, Port v Police Tero and Prachuap v Muang Thong United.
Kick-off times will be 5pm, 6pm and 7pm.
There will be two rounds of midweek matches in the first half of the season which ends in November. The season is scheduled to end on May 21.
BG Pathum won their first ever top flight title last season ahead of Buriram and Port.
After guiding the Rabbits to the Thai League 1 crown, coach Dusit Chalermsan left for Thai League 2 side Rajpracha before joining Port.
Pathum are now coached by Australian coach Aurelio Vidmar who helped them reach the knockout stages of the AFC Champions League.
Promoted sides are Nongbua Pitchaya, Chiangmai United and Khon Kaen United.